in afghanistan putting more troops in in order to try to beat back the taliban advance so that we can get to the point that we are today, they have peaceful election taking on the challenges that are posed by iran. getting russia and china on board to pass tough sanctions in the u.n. security council. negotiating a cease fire in gaza to pry to prevent a war. and i think we laid the ground work for the world as it is and how america has to engage. >> and secrets talk to win the release of american held prisoner by the taliban. in every discussion about prisoners we demanded the release of army sergeant beau bergdahl. what do you think happened that night he wept off base? >> i have this idea. i hope at least clarified by the army investigation that's been promised. but i agree with all those who have said, starting with the president going to our military leadership that it's just a core principle. you don't leave anybody behind. >> but as we know sergeant bergdahl's recent release only inflamed the president's critics. >> i don't think any of us, even i who served four years in the ad